Electric motor



July 27, 1948.

2 Shets-Sheet l Original Filed Aug. 2, 1944 INVE TOR 'I v ATTORNEY .Q v i, A# IL. Il m A A A A ,w m.\ I ...m A SM Hm M W /////V @mi ELECTRIC MOTOR 2 Sheets-Sheet 2 Original Filed Aug. 2, 1944 FIG.4

Reissued July 27, 1948 PATENT or Fica v 23,021

y ELECTRIC MOTOR 'f Joseph W. Suydam, BluePoinL'N. Y. Origin'alNb. 2,418,607, dated'Ap'r'il'S', 1947, Serial:

lAmilieati'nm forf-y rfeiss'erMarh26,1948, SerialifNo. 117,261@l folaims.4 (01.171-252) This invention relatesl toy electricfmotor construction,and hasifor its object'the 'special formation and' disposition of mechanical-parts' whereby-'it is believed a, superior motor' isV createdy for-whatever purposesit may be used. It is believed to be particularly effective when used asa starting or actuating'vmotor for airplanes.A

The individuall structureof this invention-is illustratedoin -the accompanying? drawings' of which Fig. vl.: represents a section lengthwise showlng-ally partsassembled;`

F-ig-.l 2y is a sectionall view of the motor taken transversely midway vof Fig. f-1.

Fig. I3' is the laminated-plates" body -sectionally shown inthe stationary "member of the axial shaft member.

Fig. 4 is a-` detailv illustration ofV one form of spring lcontrolledmotor brush assembly employeddn this motor.

Throughout the drawingsand specification the same number is used-'to-refertothe same part.l

A casing I of any. desiredsizeandshape has itsdetacl1abl'e portions securedz together' by the required number of bolts 2,

Suitably" 'secured Within the casing are the ld'f magnets 3 and# asl-shown in Figi'. 1. Novv 1lm'itation1is-'y intendedherein as to the size, yshape or 'disposition of the'eld magnets or the vnumber thereof.

Extending axially'withinthe casing` is ashaft member comprising usuallyl tWoA associatedl Vportions." thecaslng'fby the-nut 1f which holds -the portion 'statlon'ary. The'second axial shaftlportion 8 is@ revoluble; `vand has a' bearingf 9 on the casing as' setfforth iii-Fig; 1. The vmeeting ends-of the axial -Ts'haftportions are 'usually connectedr in revolubl relation by the' bearing Ill` carried by the`= portion 8, although in some' cases* the nec'- essary alignment' between "the shaft portions may: be'tobt'ained' Without connectingv the" meetingendsl In Fig.` 1.is-shown"theextendedl longer parts of theconductor barsY I I, of which' there may be any" desired number, and the' ends ofl the bars are' heldwinl the mounting 'rin'g device I'Zvvrotatively 'carried by the-bearing.-A I3 o'n the-stationary axialfshaft-mem'berfs vvThe ring I2 isofA metal andcondutively l'joins' the endsi' of` the -bars and is revolub'le as' shown"t in Figs. 1l and y2. The

'One"L portion 5'has1its1end6 secured to ber 8 by nut vI9 andv cone I5.v The brushes I6 carried by the-casing lead to the commutator: and' aref usually arranged in contact` with. non.y ferrous vmetal-strips i II soldered-or brazed yto the` conductor L-shapedends that-constitute thecommutatcr itself.. As illustrated. in Fig. :1 .thelonger straightv parts of theconductorbars .II pass -by and nearthe lpolesof the-field magnets..r

Considering Figs 1,- 2f and-3, there will .be noted a body of laminated#` plates I8. fThe platesA areflike pieces ot steel, and in lthe practice of this inventionit is-usual.tofseparate-the.jlamie. nations i lslightly with` layers f of non-.metallic or insulating material such as plastic .layers2`0.

As shown inl Fig. 3,v rivets 2-I and 22 secure the plates together, and rivet 23-y attaches theI laminations in a` bodyv to the stationary shaftY portionv 5, through whichthelaminations pass' diametrically by Way of a passage Min thesha-ft portionV 5.- -It is held to be withinthescope .ofthis invention to extend `the. laminationsradially.: in groups or'bodies or asf-one body -ofplatesof suitable form and number,v Witheffective devices"h whereby the groups ofy lamina-tionsfor ythe body.` thereofr` as a Wholemay be securedto the sta-V tionary shaft member. The theory of the operationsot.thisinvention is: the same as that/lof any other commutating electricv motor, but it has `been-learned ibytrial andi-it. isl theiv conclusion ofv thisapplicantthatr` the provision of the magnetic continuity result-I ing from Ithe introduction of thevlarninationsl and the arrangement-thereofr as described eect more easy manufactureof light, durable, highv speedI motors.

Having nowdescribedthisinvention; Iclaim-z 1f. 11n-electric motor construction, comprising an `outer casing, fieldr magnets located in the casing; `electrical conductors Aanda-connections- Whereby said eld magnetsareA energized,said'` casing having an Iaxiall shaftvmember` compris ing two alignedy portions; .one-portion being se-f cured at the endvto said-casing and-- heldrsta-` tionary, the second axialshaft.portion-being .ro. tary, said casing havingfa-bearingsfor` thev end-J` of the said'rotary axial-portion, saidstationary.- portion'v having anend provided with al bearing. forI the meeting end of said rotary porti-Omron'- ductor bars arrangedv tor move by and` neartheeld magnetpoles, each conductor.bar-havingam L-shaped endextensionarranged uponfsaidro-Lk tary axial shaft portion,` insulating material andh clamping devices adaptedtto connect the said L-w shaped ends of said bars and said rotary.axialj shaft por-tion, the said stationaryaxial shaft stationary axial shaft portion having a length-v wise and diametrical passage, magnetizable plate laminations placed flatwise together and secured together whereby a body of laminated. plates' is formed, said body of plates passing through the passage in the said stationary axial shaft portion, and means for securing the laminated body in said passage.

2. An electric motor construction, comprising an outer casing, eld magnets located in the casing, electrical conductors and connections whereby the field magnets are energized, said casing having `an axial shaft member comprising two aligned portions, one portion being secured at the end to said casing and held stationary, the second axial shaft portion being rotary, said casing having a bearing for the end of said rotary axial portion, vsaid stationary portion having an end provided With a bearing for the meeting end of said rotary portion, conductor bars having parts arranged to pass by and near the field magnet poles, each conductor bar having an L-shaped end extension arranged upon said rotary axial shaft portion, insulating material and clamping devices adapted to connect the said L-shaped ends of the bars and said rotary axial shaft portion. the said stationary axial shaft supporting a bearing located near its end secured to the casing, a mounting conducting ring constructed to receive the ends of said conductor bars in mutual electrical contact, the said ring having rotary engagement with the said bearing on the said stationary shaft portion, said L-shaped ends of the conductor bars arranged to form the commutator of the motor, brushes constructed and arranged to bear upon and supply electrical current to the said commutator, said stationary axial shaft portion having connected lengthwise therewith bodies of laminated plates vdisposed flatwise together and composed of magnetic metal, means for securing the said bodies of laminations to the said stationary shaft portion, and means for securing the said laminations together.

3. An electric motor comprising a casing having field magnets therein, said motor having an axial shaft member consisting of two aligned portions, one of said portions being connected with said casing and held stationary, the second aligned portion being rotary and .provided with a bearing carried by the casing, said two aligned portions having ends connected in revoluble relation, conductor bars arranged to extend near and by said field magnet poles, a revoluble conducting ring joining the ends of said bars, said conductor ibars being connected with parts forming the motor commutator, said commutator .being carried by and insulated from said rotary axial shaft portion, brushes carried by the casing and arranged to contact with said commutator, said stationary'shaft member having Iprojecting therefrom and attached thereto a plurality of laminated magnetic metal plates extending into inductive proximity and relation with the said conductor bars.

4. vAn electric motor comprising a casing hav- 4 ing field magnets therein, said motor having an axial shaft member consisting of aligned portions, one of said portions being attached to the said casing and held stationary, another of said portions being rotary and provided with a bearing carried by the casing, said aligned portions having ends connected in revoluble relation, conductor bars arranged to extend near andby the field magnet poles, a revoluble conducting ring joining the ends of said bars, said conductor lbars being constructed with `parts forming the motor commutator, said commutator being carried by and insulated from a rotary shaft portion, brushes carriedby thecasing and arranged to contact with said commutator, said stationary axial shaft member having attached thereto and projecting radially therefrom a plurality of steel plate laminations, `and the outer ends of the said laminations being extended into inductive proximity and relation with the said conductor bars.

v5. An electric motor construction, comprising an outer casing, field magnets located in the'casing, electrical conductors and connections whereby said iield magnets are energized, said casing having an axial shaft member comprising two aligned portions, one portion being secured at thev end to said casing and held stationary, the second axial shaft portion being rotary, said casing having a bearing for the end of the said rotary' axial portion, conductor bars arranged to move by and near the fleldmagnetpoles, each conductor bar having an L-shaped end extension arranged upon said rotary axial shaft portion, insulating material and clamping devices adapted to connect the said L-shaped ends of said bars and said rotary axial shaft portion, axial shaft supporting a bearing located near its end and secured to the casing, a mounting conducting ring constructed to receive the ends of said conductor bars in mutual electrical contact, said ring having rotary engagement with said bearing on said stationary shaft portion, said L-shayped ends of the conductor bars beingy arranged to form the commutator of'the motor, brushes constructed andv arranged to bear upon and supply electric'current to the said commutator, said stationary axial shaft portion having a lengthwise and diametrical passage, a magnetizable body passing through said passage, and means for securing said body in said passage.` n

6. An electric motor constructio-n, comprising an outer casing, eld magnets located in the casing, electrical conductors and connections whereby the field magnets are energized, said y casing having an axial shaft member comprising portion, insulating material and clamping devices adapted to connect said L-shaped ends of the bars and said rotary axial shaft portion, said stationary axial shaft supporting a bearing located near its end secured to the casing, a mount-v ing conducting ring constructed to receive the ends of said conductor bars in mutual electrical contact, said ring having rotary engagement with said bearing on said stationary shaft portion,-

said L-sfhaped ends of the conductor bars being arranged to form the commutator of the motor,

brushes constructed and arranged to bear uponsaid stationary having an L-shaped` end extension arranged upon said rotary axial shaft and supply electrical current to said commutator, said stationary axial shaft portion having extending lengthwise therefrom diametrically opposed extensions of magnetic metal.

7. An electric motor comprising a casing having Ileld magnets, said motor having an axial shaft member consisting of two aligned portions, one of said portions being connected with said casing and held stationary, the second aligned portion being rotary and provided with a bearing carried by the casing, conductor bars arranged to extend near and by said field magnet poles, a revoluble conducting ring joining the ends of said bars, said conductor bars being connected with parts forming the motor commutator, said commutatcr being carried by and insulated from said rotary axial shaft portion,

brushes constructed and arranged to contact with said commutator, said stationary shaft member having projecting therefrom and attached thereto a body of magnetic metal extending into inductive proximity and relation with said conductor bars.

8. An electric motor comprising a casing having eld magnets, said motor having an axial shaft member consisting of aligned portions, one of said portions being attached to said casing and held stationary, another of said portions bewith a bearing carried JOSEPH W. SUYDAM. 

